:root{--marino:#0a2a7a;--marino-2:#1f4a9a;--acento:#2f6fc0;--acento-hover:#1d4f9e;--claro:#eaf1fb;--borde:#d6e2f0;--texto:#0f1c2e;--cuerpo:#3b4a5e;--suave:#56657a;--sobre-azul:#d3e0f2;--etiqueta:#9cc3f5}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--texto);font-family:'Source Sans 3','Segoe UI',sans-serif;font-size:17px;line-height:1.55}
img{max-width:100%;display:block}
h1,h2,.serif{font-family:Fraunces,Georgia,serif;font-weight:600;color:var(--marino);margin:0;line-height:1.1}
p{margin:0}
a{color:var(--marino)}
a:focus-visible{outline:3px solid var(--acento);outline-offset:3px}
.envoltura{max-width:1248px;margin:0 auto;padding:0 24px}
/* Encabezado */
.encabezado{border-bottom:1px solid var(--borde);background:#fff;position:sticky;top:0;z-index:10}
.encabezado .envoltura{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-top:14px;padding-bottom:14px}
.marca{display:flex;align-items:center;gap:14px;text-decoration:none}
.marca img{height:60px;width:auto}
.marca b{display:block;font-family:Fraunces,Georgia,serif;font-size:21px;color:var(--marino)}
.marca small{display:block;font-size:13px;color:var(--suave)}
.menu{display:flex;align-items:center;gap:28px}
.menu a{text-decoration:none;font-size:16px}
.menu a:hover{color:var(--acento)}
/* Botones */
.boton{display:inline-block;text-decoration:none;font-weight:600;border-radius:999px;padding:15px 28px;font-size:17px;text-align:center;border:1.5px solid transparent;transition:background .15s}
.boton-principal{background:var(--acento);color:#fff}
.boton-principal:hover{background:var(--acento-hover);color:#fff}
.boton-oscuro{background:var(--marino);color:#fff}
.boton-oscuro:hover{background:var(--marino-2);color:#fff}
.boton-borde{border-color:var(--marino);color:var(--marino)}
.boton-borde:hover{background:var(--claro)}
.boton-blanco{background:#fff;color:var(--marino)}
.boton-borde-blanco{border-color:#fff;color:#fff}
.boton-borde-blanco:hover{background:var(--marino-2)}
.menu .boton{padding:11px 22px;font-size:16px;color:#fff}
.botones{display:flex;flex-wrap:wrap;gap:14px}
/* Foto provisional: reemplaza por <img> */
.foto{background:#e3ecf8;border:1.5px dashed #8fa8c8;display:flex;align-items:center;justify-content:center;color:#475a78;text-align:center;padding:16px;border-radius:24px;min-height:260px}
.foto-azul{background:var(--marino-2);color:#c7d6ec;border-radius:0}
img.foto-real{object-fit:cover;width:100%;height:100%;border-radius:24px}
.portada .foto-real{border-radius:0;min-height:260px;object-position:78% center}
.cert-portada .foto-real{height:440px}
/* Portada del inicio */
.portada{margin-top:32px;background:var(--marino);border-radius:28px;display:grid;grid-template-columns:1.05fr 1fr;overflow:hidden;color:#fff}
.portada-texto{padding:64px;display:flex;flex-direction:column;gap:24px}
.portada h1{color:#fff;font-size:clamp(36px,4.4vw,60px)}
.portada p{color:var(--sobre-azul);font-size:19px}
.etiqueta{font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--acento)}
.portada .etiqueta,.bloque-azul .etiqueta{color:var(--etiqueta)}
/* Secciones */
.seccion{padding:96px 0 0}
.dos-columnas{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.titulo{font-size:clamp(32px,3.4vw,48px)}
.intro{font-size:19px;color:var(--cuerpo)}
.tres{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px;margin-top:56px}
.tres .cifra{font-family:Fraunces,Georgia,serif;font-size:42px;font-weight:600;color:var(--acento)}
.tres h3{margin:8px 0;font-size:21px}
.tres p{color:var(--cuerpo)}
.tarjetas{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:40px}
.tarjeta{display:flex;flex-direction:column;gap:16px;padding:32px;border:1px solid var(--borde);border-radius:22px;background:#fff}
.tarjeta.destacada{border:2px solid var(--acento)}
.tarjeta h3{font-family:Fraunces,Georgia,serif;font-size:28px;line-height:1.15;color:var(--marino);margin:0}
.tarjeta p{color:var(--cuerpo);flex-grow:1}
.tarjeta .boton{align-self:flex-start}
.insignia{align-self:flex-start;font-size:13px;font-weight:600;padding:6px 12px;border-radius:999px;background:var(--claro);color:var(--cuerpo)}
.destacada .insignia{background:var(--acento);color:#fff}
.bloque-azul{background:var(--marino);color:#fff;border-radius:24px;padding:56px 64px}
.bloque-azul h2{color:#fff}
.bloque-azul .texto-suave{color:var(--sobre-azul)}
.bloque-azul b{color:#fff}
.lista-acreditaciones{display:flex;flex-direction:column;gap:18px;font-size:18px}
.bloque-claro{background:var(--claro);border-radius:24px;padding:48px 64px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.pie{margin-top:96px;border-top:1px solid var(--borde);padding:32px 0;color:var(--suave);font-size:15px}
.pie .envoltura{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
/* Página del certificado */
.cert-portada{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding-top:80px}
.cert-portada h1{font-size:clamp(38px,4.8vw,68px)}
.cert-portada .foto{min-height:440px}
.datos{margin-top:80px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));background:var(--marino);color:#fff;border-radius:20px}
.datos div{padding:30px 32px;border-right:1px solid var(--marino-2)}
.datos div:last-child{border-right:0}
.datos b{display:block;font-family:Fraunces,Georgia,serif;font-size:38px}
.datos span{color:#c7d6ec}
.asignaturas{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:36px}
.asignatura{display:flex;align-items:center;gap:20px;text-decoration:none;background:#fff;border:1px solid var(--borde);border-radius:16px;padding:22px 26px;transition:border-color .15s}
.asignatura:hover{border-color:var(--acento)}
.asignatura .num{font-family:Fraunces,Georgia,serif;font-size:26px;color:var(--acento);width:38px;flex-shrink:0}
.asignatura .nombre{flex-grow:1;font-size:19px;font-weight:600;color:var(--texto)}
.asignatura .ir{font-size:15px;font-weight:600;color:var(--marino);white-space:nowrap}
.pasos{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:36px}
.paso{background:var(--claro);border-radius:20px;padding:30px;display:flex;flex-direction:column;gap:12px}
.paso .circulo{width:44px;height:44px;border-radius:50%;background:var(--marino);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600}
.paso h3{margin:0;font-size:21px}
.paso p{color:var(--cuerpo)}
.contacto-cert{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.contacto-cert .botones{flex-direction:column}
/* Móvil */
@media (max-width:900px){
 .menu a:not(.boton){display:none}
 .marca img{height:44px}.marca small{display:none}.marca b{font-size:18px}
 .portada,.cert-portada,.dos-columnas{grid-template-columns:1fr}
 .portada .foto,.portada .foto-real{order:-1;min-height:200px}
 .portada .foto-real{height:220px}
 .portada-texto{padding:32px 24px}
 .tres,.tarjetas,.pasos,.asignaturas{grid-template-columns:1fr}
 .tres{gap:28px}
 .datos{grid-template-columns:1fr 1fr}
 .datos div:nth-child(2){border-right:0}
 .datos div:nth-child(-n+2){border-bottom:1px solid var(--marino-2)}
 .bloque-azul,.bloque-claro{padding:32px 24px}
 .seccion{padding-top:64px}
 .cert-portada{padding-top:40px;gap:28px}.cert-portada .foto{min-height:220px;order:-1}.cert-portada .foto-real{height:240px;order:-1}
 .asignatura .ir{display:none}
 .asignatura .nombre{font-size:17px}
 .botones .boton{flex:1 1 100%}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}